21161+4101
- Unique Name: 21161+4101COU2229
- RA: 21 16 08.12
- Dec: +41 01 09.3
- Discoverer: COU
- Discoverer Number: 2229
- Components:
- First year: 1984
- Last year: 2009
- Observations: 4
- First position angle: 273
- Last position angle: 272
- First separation: 0.5
- Last separation: 0.8
- Mag first component: 10.12
- Mag second component: 10.38
- Spectral type: B5
- Primary proper motion RA: -2
- Primary proper motion DEC: -3
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -3
- Durchmusterung: +40 4463
- Notes: